For questions on connecting devices together so that they can communicate with each other, as well as on networking equipment such as routers and switches.

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monitoring and blocking network traffic [duplicate]

Possible Duplicate: Monitor all and any internet traffic from my home PC - what should I use? Which is the best program for monitoring and blocking network traffic through Local network ...
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1answer
1k views

Home network (Vista) access IIS localhost from another computer

I have two computers on a home network. One is a development machine, testing sites on IIS (http:// myclientsite/). My other computer (Laptop) is connected through a wireless – it can access shared ...
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1answer
4k views

Why does my ethernet connection keep re-connecting, only with Windows?

I'm using Windows 7, and I have several computers on my network. For some reason, the network connection keeps disconnecting and immediately re-connecting. Infact, it may just be refreshing the DHCP ...
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3answers
4k views

iptables syntax to forward remote desktop requests to a virtual machine on CentOS host

I can rdesktop into a VM running Windows XP hosted on my CentOS 5.4 machine from the hosting machine and work just fine using the private address (192.168.122.65), but I now need to allow remote ...
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4answers
2k views

Two computers in a workgroup, A can see shares on B, but B requires user credentials to see shares on A. What haven't I set?

I have two computers. Lets call them A and B. Both are on the same Workgroup (at least I think they are as far as I can see the workgroup names match). Both are running Windows XP Pro SP3. B is fully ...
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7answers
7k views

Connecting a ADSL router to a wireless router. What am I doing wrong?

What is the correct way to do it? This are the steps I have taken: Disable DHCP in Wireless router Setup a fixed IP (192.168.1.2) and telling that the default Gateway is 192.168.1.1 (the ADSL ...
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2answers
880 views

Is my ethernet port broken?

Im on a macbook (black, model 4,1), and it seems my ethernet doesn't work. When I plug in the cable, System Preferences > Network says: This suggest that the ethernet card is at least partially ...
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4answers
806 views

Looking for something to monitor an Internet Shared Connection in Windows XP

If someone knows any software with these features: Works from the tray area Very lightweight Works also in Windows XP (preferably workstation, nothing serverish required) Can show a bandwidth usage ...
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1answer
42 views

What is automatic service location on the network?

I know that zeroconf does automatic service location on the local network. But what does it mean? For example there is a printer (printing is the service that it does). This printer choose randomly an ...
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1answer
444 views

Multiple Time Machine Network Backups

I have FreeNAS servers at work and at home. Both are set up to back up via Time Machine. Is there a way I can tell my Macbook Pro to use both without having to manually switch in the Time Machine ...
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2answers
102 views

Network login brings in user environment to any machine

In this article about Sun, the author talks about how using a Sun network meant that you could log onto any computer on a network and all of your personal tools and settings would be there. Is it ...
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4answers
2k views

Why is adhoc connection without internet faster than via router?

I'm transferring some data from my desktop to my laptop trough wifi. My home network is managed with windows 7 homegroup When my 2 pc's are connected via my router (with internet access) i get max ...
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1answer
147 views

How can I share a directory in a network?

Suppose I have several laptops working under Windows XP and connected via a local network. Now I want to "share a directory" so that I can access it from another computer. How can I do it?
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3answers
266 views

Can connect to WAN via PC but router doesnt

I have a very strange problem regarding the office network. We are currenltly in a executive suite and when i connect to wan via ethernet cable i get dhcp assigned IP address in my network config. I ...
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3answers
141 views

How web servers can find each other in a local network?

I would like to build a local network consisting of several computers each of which is running a web server. These web-servers should communicate with each other. But the problem is that IP addresses ...
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0answers
445 views

Wake On LAN behaviour - works intermittently

When I send WoL packets over my network the specified boxes tend to wake up the first time I send the packet each day, but if I turn the box off then subsequent WoL packets tend to be unsuccessful. ...
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2answers
5k views

Network Traffic Log

Background - On my "home" network I have a Linksys WTR45GL router providing my internet access as well as a wireless AP. Connected I have * 2 Windows PCs (wired) * At least one laptop (Wired) * Some ...
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1answer
126 views

How to back up a Windows Home Server over the network?

One of the very few reasons I have to physically interact with my Windows Home Server is to back it up to an external hard drive, with the "Backup Server" feature. It would be more convenient to plug ...
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2answers
193 views

What programs can I use to see what traffic of mine a network admin can see?

What programs can I use to see what traffic of mine a network admin can see? Monitor incoming and outgoing network traffic at a the packet level, I want to make sure my VPN is working properly.
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1answer
1k views

Router loses connection to internet randomly

I have a Belkin wireless G plus Mimo router and it randomly loses the connection to the internet. It seems to happen for a second or two, not enough to impact day to day browsing. But enough to ...
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1answer
181 views

How do I reliably and silently maintain a connection to a remote fileserver on Mac OS X?

Is there a way on Mac OS X 10.6 to force the OS to constantly attempt to connect to two separate file servers (On separate networks), maintaining the connection whenever possible?
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1answer
73 views

I am trying to get the virtual xp to use the same dafault gateway as the mac

I have a wireless printer HP 8500 officejet pro and the default gateway changed on the mac but not in the xp so I can't install the software for the wireless printer. How can I make my mac and the xp ...
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1answer
206 views

Conflicts between 2 NICs

I have an HP server (Windows Server 2003) with 2 external NICs (couldn't get the builtin NIC to work). One is for an internal network of 4 PCs and the other is for part of an Internet-facing ...
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1answer
1k views

What is “Network Infrastructure” feature in Windows Exploer?

On a Windows 7 machine in Windows Explorer under Network subtree I can also see node called "Network Infrastructure" and my wireless modem is listed here? Could someone please point me to ...
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2answers
887 views

How to combine with openvpn, dynamic-ip?

Dear everyone, I am currently using openvpn to surf online to bypass censorship. Let me show you the initial scenario: before openvpn is turned on: IP: 1.2.3.4 (hypothetical, checked by visiting ...
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1answer
561 views

retransmission of lost TCP segment

What will happen in the following scenario (assume the connection is already established): (stack A) send 10 byte data (stack B) send ACK for 10 byte data (stack B) send 200 byte data (stack B) send ...
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2answers
6k views

Is your MAC address revealed when you hit up a website?

When you hit up a site, such as cnn.com, does the TCP/IP packet contain the MAC address of your network card? Could cnn.com theoretically record my MAC address?
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1answer
4k views

Fedora not finding network card after installing updates

I had Fedora 11 on a machine I built for quite a while. Then yesterday I downloaded a bunch of updates, then my network card quit working. I couldn't resolve the problem so I did a fresh install of ...
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1answer
424 views

Snort network instruction Mac OS X

I'm trying to learn network intrusion detection. When I try to launch Snort, in IDS mode, I get this message (I'm running Mac OS X): Initializing Network Interface en1 ERROR: OpenPcap() FSM ...
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1answer
423 views

How to configure vmware in this situation?

Now I'm using a router to connect my computer to the Internet. I installed VMware Workstation 7 on my computer and installed a guest OS which is CentOS 5.3. Now I want to using putty to connect to the ...
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3answers
343 views

Wireless network card security vulnerabilities

Is it possible for a hacker to access a standalone laptop that has an enabled wireless network card but is not connected to a wireless access point? I.e. I'm using my laptop on the bus and someone ...
3
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2answers
314 views

How to conditionally tether my cellphone?

I can do tethering with my cell phone. Where I work, certain sites are blocked (gmail, yahoo mail, etc...). Is there a way to tell windows to go through the cell phone on certain sites, but for all ...
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2answers
2k views

No file sharing between two server 2008 R2 machines

I have just replaced XP with Server 2008 R2 on my test sever, and have been running 2008 R2 on my dev laptop. When my server was still XP, file sharing just worked, but now it just doesn't. I've ...
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1answer
627 views

Computer can not connect to any shares

Windows 7 64 bit After rebooting my computer i can not access any shares at all.The error is "windows cannot access \tb228dc\" There are shares on the domain i can usually connect to. I can not ...
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2answers
1k views

HTTP, HTTPS and FTP is not working but SMTP and IMAP are working

Yesterday on a computer of a friend a strange thing happened. after booting the ports for http, https and ftp are closed but e-mail is still working. in the control panel the Windows firewall seems ...
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2answers
126 views

Can I point a local browser to a file through a remote desktop connection?

I'm not sure if there is a good solution to this problem or not... We have a database application setup at a client's location that we monitor remotely. We use a remote desktop connection to our ...
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3answers
954 views

Multifunction printer / scanner that can *easily* be accessed over the network

A few more details: Network scanner is the most important function; the less software it requires to play with OSX the better (looking at you, HP) Decent-ish printer is a nice to have; ideally with ...
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6answers
844 views

Problem with network after malware attack

Im trying to help some friends with a Win XP machine. I got rid of the malware using Malware Bytes, and HiJackThis. But now they(I) have another problem. When the computer boot into Windows it seems ...
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2answers
271 views

Building a network at home, what cables to use (if any)?

My house is currently in ruins and am building it. While doing so, I wanted to design a home network. My main objectives are surfing and HD streaming. The house is one-level, 100 sq/m (about 300 ...
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1answer
1k views

Garbled VoIP over VPN, mainly on conference bridges

My office has a large Cisco UCM setup, and I work primarily remotely with a physical Cisco 7940 phone. I've battled some quality issues before, which turned out to be a bad switch port. But mostly ...
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1answer
1k views

Looking for a network card that supports promiscuous mode

I've researched in the past and if I remember, a lot of network cards don't support this feature. What is out there that I may have missed?
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7answers
5k views

Why can't my Windows Home Server see the internet?

I've got an ASDL router at home, that is connected via ethernet to a wireless router. My wireless devices at home connect to my wireless network and get access the internet fine. My Windows Home ...
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1answer
437 views

How to setup a Wi-Fi 2-computer network with Internet sharing?

I have the following devices: Desktop Computer (Windows XP Professional) Laptop Computer (Windows Vista Home Premium) A USB modem that I want to connect to my Desktop computer (so my Desktop has ...
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3answers
5k views

Being able to access cable modem's web interface

Updated I've got a Motorola SBG900 cable modem sitting in front of a Linksys WRT54G running DD-WRT. The DHCP server is running on the Linksys router not the modem. I can access the DD-WRT web GUI ...
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6answers
40k views

Homegroup doesn't show other computers, but “Network” does

I have a desktop and a laptop (both running windows 7) in my Windows 7 homegroup. The desktop created the homegroup, and the laptop joined it. Both share a few folders. On the laptop, I have no ...
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3answers
208 views

Configure router?

Can I configure my Netgear router to always assign the same DHCP IP address to a computer with name "xxxxx" That also means reserving that IP if the computer is not online, and not assigning it to ...
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6answers
1k views

Streaming music throughout the house on a budget?

I was wondering whether anyone knew of a way to stream music throughout a house on a budget? I want to avoid spending any money on this (eg. I don't want to buy a d-link style device). It would be ...
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4answers
147 views

Cant choose home router [closed]

I have no fear of console and my old routers is awful (DSL-500T for bridging ADSL to LAN and then DSL-524 for distributing LAN across network and provide Wi-Fi). So I've decided to replace it with ...
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3answers
3k views

Computer cannot get DHCP address and if assigned valid static IP it still can't use network

The computer (HP laptop, Vista 64bit Home Premium SP1) had/has viruses. To remove viruses, I took out drive and hooked up to another computer and used 2 different scanners to remove viruses. I then ...
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2answers
4k views

Finding all ICMP enabled Hosts on Local Subnet

I am a host in a 255.255.255.0 subnet - conforming to RFC1918. What ways are possible (without iterating over the 254 addresses) to map the IPEndPoints in my local subnet?